| 引用本文： |
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王全颖,张建乐,张勇,张万磊,褚芹芹,张永丰,赵洁.北戴河沿岸海域溶解氧变化分析[J].海洋开发与管理,2025,42(12):92-101
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| 摘要: |
| 溶解氧（Dissolved Oxygen，DO）是反映海洋水质变化的重要指标，对维持海洋生态系统平衡具有重要意义。文章基于 2024 年夏季北戴河沿岸海域 3 个浮标的监测数据，分析了 DO 的时空分布特征及其与环境因子的相关性。结果表明，老虎石和金山嘴海域夏季 DO 日均值的最低值出现在 7 月下旬，分别为 5.67 mg/L 和 5.39 mg/L；洋河口海域 DO 日均值的最低值出现在 8 月上旬， 为 6.28 mg/L。7 月下旬以后，降水量剧增，DO 质量浓度大幅波动，8 月 24 日，老虎石、洋河口和金山嘴三个海域同时出现 DO 日均值的夏季最大值，分别为 10.37 mg/L、11.22 mg/L 和 11.41 mg/L。DO 日内最高值出现在 16:00—17:30，最低值出现在 6:00—7:30。Pearson 相关分析发现，老虎石、洋河口和金山嘴三个海域DO 质量浓度与pH、叶绿素 a（Chlorophyll-a，Chl a）、气压（Atmospheric Pressure，AP）之间均呈极显著正相关。主要环境因子对 DO 质量浓度的通径分析显示，老虎石和金山嘴海域 DO 质量浓度主要受 pH、Chl a 影响，而洋河口海域 DO 质量浓度主要受 pH 影响。 |
| 关键词: 北戴河 溶解氧 多元逐步回归 通径分析 |
| DOI：10.20016/j.cnki.hykfygl.2025.12.007 |
| 投稿时间：2025-03-19修订日期：2025-12-22 |
| 基金项目:自然资源部北海局科技创新赋能海洋事业高质量发展三年行动项目（2023B03-STC）． |
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| Analysis of Dissolved Oxygen Variation in the Coastal Waters of Beidaihe |
| WANG Quanying,ZHANG Jianle,ZHANG Yong,ZHANG Wanlei,CHU Qinqin,ZHANG Yongfeng,ZHAO Jie |
| Qinhuangdao Marine Center，MNR;Qinhuangdao Marine Forecast Station，MNR |
| Abstract: |
| Dissolved Oxygen（DO），an important indicator reflecting changes in marine water quality，plays a significant role in maintaining the balance of marine ecosystems．Based on monitoring data collected from three buoys in the coastal waters of Beidaihe during the summer of 2024，this study analyzed the spatiotemporal distribution characteristics of DO and its correlations with environmental factors．The results indicated that the lowest daily average values of DO in the summer for the Laohushi and Jinshanzui areas occurred in late July，at 5.67 mg/L and 5.39 mg/L respectively，while the lowest value in the Yanghekou area was in early August，at 6.28 mg/L．After late July，there was a sharp increase in precipitation，leading to significant fluctuations in DO concentrations．On August 24th，the maximum daily average values of DO for the summer were observed simultaneously in the three areas of Laohushi，Yanghekou，and Jinshanzui，which were 10.37 mg/L，11.22 mg/L，and 11.41 mg/L respectively．The highest DO value within the day occured between 16:00 and 17:30，and the lowest value occured between 6:00 and 7:30．Pearson correlation analysis revealed that DO concentration in the three areas of Laohushi，Yanghekou，and Jinshanzui was significantly positively correlated with pH，Chlorophyll-a（Chl a）， and Atmospheric Pressure（AP）．Path analysis of the main environmental factors affecting DO concentration indicated that DO concentration in Laohushi and Jinshanzui areas was mainly influenced by pH and Chl a，while in the Yanghekou area，it was primarily affected by pH． |
| Key words: Beidaihe,Dissolved Oxygen,Multiple stepwise regression,Path analysis |
